A certain drug is used to treat asthma. In a clinical trial of the drug, 15...

Transcribed Image Text:

A certain drug is used to treat asthma. In a clinical trial of the drug, 15 of 298 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 11% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below. a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test Left-tailed test Two-tailed test b. What is the test statistic? Z= (Round to two decimal places as needed.) c. What is the P-value? P-value = (Round to four decimal places as needed.) d. What is the null hypothesis, and what do you conclude about it? Identify the null hypothesis. OA. Ho p0.11 OB. Ho: p <0.11 OC. Ho: p>0.11 OD. Ho p=0.11 Decide whether to reject the null hypothesis. Choose the correct answer below. OA. Fail to reject the null hypothesis because the P-value is greater than the significance level, a. OB. Reject the null hypothesis because the P-value is greater than the significance level, a. OC. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. OD. Reject the null hypothesis because the P-value is less than or equal to the significance level, c. e. What is the final conclusion? OA. There is not sufficient evidence to warrant rejection of the claim that less than 11% of treated subjects experienced headaches. 1-Prop2Test prop <0.11 z=-3.291791191 p=0.0004977575 p=0.0503355705 n-298 A certain drug is used to treat asthma. In a clinical trial of the drug, 15 of 298 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 11% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below. a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test Left-tailed test Two-tailed test b. What is the test statistic? Z= (Round to two decimal places as needed.) c. What is the P-value? P-value = (Round to four decimal places as needed.) d. What is the null hypothesis, and what do you conclude about it? Identify the null hypothesis. OA. Ho p0.11 OB. Ho: p <0.11 OC. Ho: p>0.11 OD. Ho p=0.11 Decide whether to reject the null hypothesis. Choose the correct answer below. OA. Fail to reject the null hypothesis because the P-value is greater than the significance level, a. OB. Reject the null hypothesis because the P-value is greater than the significance level, a. OC. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. OD. Reject the null hypothesis because the P-value is less than or equal to the significance level, c. e. What is the final conclusion? OA. There is not sufficient evidence to warrant rejection of the claim that less than 11% of treated subjects experienced headaches. 1-Prop2Test prop <0.11 z=-3.291791191 p=0.0004977575 p=0.0503355705 n-298